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Shading Artefacts 2.93 Alpha M1 Mac
Needs Triage, NormalPublic


System Information
Operating system: macOS-11.2.3-x86_64-i386-64bit 64 Bits
Graphics card: Apple M1 Apple 4.1 Metal - 71.0.7

Blender Version
Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-03-20 21:00, hash: rB9ca67c47a152
Worked: (newest version of Blender that worked as expected)

Short description of error
There are shading artefacts on a blank plane object.

Exact steps for others to reproduce the error
Delete everything in the default scene
Create a blank plane object
In Viewport Shading enable flat lighting then enable shadow

Event Timeline

I can't replicate the problem.

**System Information**
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: Radeon (TM) RX 480 Graphics ATI Technologies Inc. 4.5.14760 Core Profile Context 27.20.14537.1001

Can't reproduce either

System Information :
Operating system : Windows-10-10.0.18362-SP0 64 Bits
Graphics card : AMD Radeon(TM) 535 ATI Technologies .

Adding macOS tag if issue is related to mac devices .